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Encapsulated back-up system for use with seal system

Abstract: Disclosed is an anti-extrusion assembly used in conjunction with an expandable packing device. The assembly comprises two slotted metallic rings encapsulated in a non-metallic material. The slotted metallic rings prevent extrusion of the sealing mechanism of the expandable packing device as the device is set in a wellbore casing. The encapsulating non-metallic material protects the metallic rings from damage as the packing device is run into the wellbore. In an alternative embodiment, the anti-extrusion assembly comprises a crimped metallic ring flanked by non-metallic rings. As with the slotted metallic rings, the single crimped metallic ring prevents extrusion of the sealing mechanism of the expandable packing device as it is set in the wellbore casing. ...

Agent: Howrey LLP - Falls Church, VA, US
Inventors: Hubert F. Garrison, Douglas J. Lehr, Gabriel Slup
USPTO Applicaton #: #20070290454 - Class: 277611000 (USPTO)

Related Terms: Conjunction Encapsulated Encapsulating Packing Related Patent Categories: Seal For A Joint Or Juncture, Seal Between Fixed Parts Or Static Contact Against Relatively Movable Parts, Contact Seal For A Pipe, Conduit, Or Cable, Inserted Between End-to-end Pipe, Conduit, Or Cable Joint, Extrusion Preventing (i.e., Antiextrusion) Or Compression Limiting Feature
The Patent Description & Claims data below is from USPTO Patent Application 20070290454, Encapsulated back-up system for use with seal system.

Conjunction Encapsulated Encapsulating Packing

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